Anwarul K. Chowdhury (left), Under-Secretary-General and High Representative for the Least Developed Countaries, Landlocked Developing Countries and Small Island Developing States, speaking at the opening. (Photo #UNE6794 by Eskinder Debebe)

Betty Williams, 1977 Nobel Peace Laureate, speaking at the opening. (Photo #UNE6796 by Eskinder Debebe)

Actor Patrick Duffy speaking at the opening. (Photo# UNE6789 by Eskinder Debebe)

Ribbon-cutting ceremony at the opening. (Photo #UNE6797 by Eskinder Debebe)

Musicians Herbie Hancock (left) and Buster Williams playing at the opening of the exhibition. (Photo #UNE6790 by Eskinder Debebe)

Left to right: Herbie Hancock (piano), Buster Williams (bass), Larry Coryell(guitar), Terri Lynn Carrington (drums), and Nestor Torres (flute) playing at the opening of the exhibition. (Photo #UNE 6791 by Eskinder Debebe)

Middle School Chorus from United Nations International School at the opening of the exhibition. (Photo #UNE6793 by Eskinder Debebe)

Middle School Chorus from United Nations International School singing at the opening of the exhibition. (Photo #UNE6795 by Eskinder Debebe)

View of the exhibition. (Photo #UNE6792 by Eskinder Debebe)

A view of the exhibition, "Building a Culture of Peace for the Children of the World". (Photo #UNE 6788 by Eskinder Debebe)